Nut-lock



(No Model.)

P. F. FOULK. NUT LOOK. v No. 354,696. Patented Dec. 21, 1886.

4 e In fvlmlmsg INVENTOR ATTORNEYS To'aZZ whom it may concern:

hereby declare. the following to be afull, clear,

' will enable others skilled in the art to which "'ter'. illustrated inthe accompanying drawings, simiriphery of the flange and radially towardthe center. The inside opening, G, of the washer ingat the upper side ofthe washer and facing a of Pennsylvania,l1ave invented certain newandvices in which a washer of peculiar construe .This invention the Outeredge of l ge of this washer into washer, Fig. 3, a plan viewconstruction of the washerO is shown, jthe .4

the taper being shown in cross-section at g, the

tongues, one of which is shown at F. The out- Nth-ran STATES,

FRANK r. FOULK, on wE-s'r EARL, rnNNsYLvAnIA.

NUT-LOCK.

PncfrIoATroNjoimin a t6! Letters Patent No. 354.596, dated December 21,1886 Application filed November 3, 1886.

' Serial No. 217,863. (No model.)

.Be it .known that I, FRANK F. route, of West Earl, in the county ofLancaster and State useful Improvements in Nut-Locks; and I do and exactdescription of the invention, such as it appertains to make and use thesame.

Thisinvention relates to nut-locking detion is usedto prevent the notfrom turning on the bolt. V,

This invention consists, partly, in the construetion of a. circularwasher, the hole through which is of a size to pass over the bolt. Faston intQ'the threads of thebolt, preventing the washer from turning, in amanner hereinafter. described. g

further 1 consists'in bisecting a number. of lugs by cuts extending adistance in from the periphery and radial with the cen- I attain theseobjects by the mechanism lar letters referring 'to similar partsthroughout the several views. f

f Figure 1 represents a longitudinal perspective sectional View of thelocking washer, through the lines A A of Fig. 3, fully showing one ofthe semicircular tongues, Fig. 2, a full side elevation showing the nut,bolt, and of Fig. 2,with the plate B removed.

. v j In the perspective sectionalv-iemFi g. 1, the.

outer edge ofthe flange a being bisected into a number of lugs,d d d,bythe cutse e e. These cuts project in a distance from the outer pewhereit fits the boltDis cone or'funnelshaped,

large end of this section of a concave cone bethe; nut E.- Fast onopposite sides of this cone-shaped opening are semicircular springmetalof the body 0, and on theinside edge of the other 'end,'-which isallowed to spring up.

above the face of the same, are V-shaped projections f, which areintended to be pressed into the thread 'of thebolt D by the nut E, in amanner hereinafter described, Fig. 1 showingone half of the washer only.It is understoodthe other half is similar.

Having described the construction of this washer, the application of thesame is as follows: The bolt-D being in position through the workonplate-B thle washer O is slipped onto the same, the spring-tonguesbeingaon the upper side, the Vshapedprojection pressing against thethread of the bolt D on each side of the same. The/nut E is now screweddown on the bolt D. When it comes in contact with theupwardly-projecting ends of the springa I tongues F, they are forceddown in the washer O; the. opening in which being cone-shaped, and theoutside of the tongues conforming to the same, the action of the nut inforcipg their semicircular convex faces into the conca ve cone of thewasher drives the V-shaped projections f on their outer endsinto thethread of-the bolt D, as seen atff in Fig. 3, which prevents the washerG from turning on bolt D,

by a number of the lugs d d'd of the flange of the washer, which arebent up against its sides, as shown'at d d d in Fig. 2.

In the drawings the washer shown with a boss, it on its under side,which makes said' washerth'icker around the central opening than theouterflan-ge, 'c; The idea of this feature is to allow a tool to be moreeasily entered under the lugs dd d when it is desired to bend them upagainst the sidesof the nut- E, though to facilitate manufacture thewasher may be made from fiat plate of the required thickness.

Having thus described my invention, whatI clainnas new, and desiretosecure by Letters Patent, is

In aunt-locking device, the'c'ombiuation, in a washer, of the followingelements: the body O and the lugs cl d d, constituting tliefiange c,

which may be turned up against the side of the nut E to pr same fromturning, the central Gene a1 opening, G, and semieir eularspring-tongues F, whieh are fast on op positesides of the opening G, andthe pointsf" on the inner face of the upwardly-projecting ends of thetongues F, which are forfied into the llllZfGZtd'Of the belt Dte-prevent the washer turning, when construeted and appliedsubstantially as herein shown, and for the purpose IO set forth anddescribed.. I

In testimony whereof I have hereu nte-subof two sub.

scribed my name in the presence scribing witnesses.

FR: m F. FOULK.

Witnesses:

A. ESHENCK, J. S. BITNER,

